How to make an object point in the direction that it's going?
You could try using the Follow Path  constraint.

Add a path (ShiftA&gt; Curve &gt; Path)

Select the object you wish to animate along the path and add a Follow Path constraint. Select the curve path as the target:


You can quickly setup the path animation by pressing Animate Path

Enable Follow Curve to make the object face the direction it is moving in:



For more precise animation of the speed along the path, keyframe the Evaluation time in Curve &gt; Path Animation:

Note that if you have animated the path by pressing Animate Path, you will have to remove the generated F-modifier in the Graph Editor to be able to keyframe it.